The EU warns that the impact of a no-deal scenario on citizens is "very real", leaving open the issue of visa requirements for British travelers traveling to the continent.
The remaining 27 Member States were invited, along with companies, to intensify their preparations for a result that would knock the United Kingdom out of the bloc next year.
In sectors that are financially rich For the aerospace and pharmaceutical industries, governments and businesses have been urged to prepare for the worst, with obstacles to the normal course of anticipated business.
A senior EU diplomat described the "volatile" political situation in London and the shortage The progress made in key discussions in Brussels has led many to believe that the risk of a no-deal scenario has increased in recent weeks have.
"Important questions remain open", it says in the document. "No progress has been made in agreeing a" final ban "to avoid a hard border on the island of Ireland, regardless of the outcome of the negotiations for the future partnership."
The document, Preparing for the Exit of the United Kingdom from the European Union on March 30, 2019, warns that the precarious nature of the talks necessitates a vital action.
"Emergency planning for the worst outcome is not a sign of distrust in the negotiations," the paper said. "The Commission dedicates very significant resources and makes great efforts to reach an agreement, which remains our goal, but the outcome of the negotiations can not be predicted."
The "no deal" document was published hours before the arrival of the new Brexit Secretary Dominic Raab in Brussels for his first meeting with EU Chief Negotiator Michel Barnier. although a commission spokesman denied that the two events were connected.
The document is strong in its analysis of the impact on economies on both sides of the channel.
It says: "The European Union must apply its regulation and tariffs at the borders with the United Kingdom as a third country, including controls and controls for customs, health and phytosanitary standards [regarding plants] and to verify compliance with EU standards.
"Traffic between the United Kingdom and the European Union would be severely affected. Customs controls, sanitary and phytosanitary controls at borders could lead to significant delays, eg in road traffic and difficulties for ports.
The EU document also treats the movement of British citizens on the continent regarding the need for a visa to be included in one of the two lists.
Asked about the unlikely outcome that British Citizens need a visa, an EU official responded that Brussels left the issue open. "I can not give you an answer today," he said.
The document points out that even with a deal too Changes in the way business would be traded, with larger corporations already turning their backs on the UK as a result of the Brexit process, says the Commission.
"The breakup of a relationship that has built up over 40 years will inevitably lead to significant changes in relations with the UK levels, including economic and legal, "- says the document nt. "Everyone must therefore prepare for the changes that the departure of the United Kingdom will inevitably bring … Many companies move to the EU27 or expand their business in the EU27."
An EU official added: " We have the impression that in a few weeks, a return point has been considered by a certain number of industries and they are making their decisions.
"You have seen a statement from companies that are rethinking investments, shifting part of their activities, transferring their approval for medicines in the EU, and this is not yet done."
"But the big difficulty is that To reach millions of small and medium-sized businesses that have only the experience of working and working in the EU single market. "
Barnier will speak on Brexit Europe's EU27 ministers on Friday will not fiercely contend with Theresa Mays Compromise plan agreed this month in the Checkers' Cabinet, but instead focus on the need for progress on the EU-UK agreement and on the fundamentals of future trade
"We are not negotiating the White Paper," he said High-ranking EU official. "We are negotiating the withdrawal agreement and we are negotiating a political declaration on future relations with Britain. "
They added:" We are really glad that we have the White Paper on the table and have something to work with. But it is not more than that. It is not the Ten Commandments.
The official said the White Paper had many questions that were "detailed but to some extent unclear."
The EU is deliberately cautious in its response to the White Paper, cautiously, Theresa May destabilizing fragile power.
Stressing the unpredictability of British politics, the senior EU official said they could also "read the guts of animals" to know what's going on.
"The situation in London is very high volatile and I think nobody can say what will happen to the political situation in Britain now. Therefore, we try to be very calm and careful not to pour oil into the fire. "